Add default template (smithy-lang#1843)

* Add default template

Author: hpmellema

smithy-cli/src/it/java/software/amazon/smithy/cli/InitCommandTest.java

@@ -34,23 +34,30 @@ public void init() {
     }
 
     @Test
-    public void missingTemplate() {
+    public void usesDefaultTemplate() {
         IntegUtils.withProject(PROJECT_NAME, templatesDir -> {
             setupTemplatesDirectory(templatesDir);
 
-            IntegUtils.withTempDir("missingTemplate", dir -> {
+            IntegUtils.withTempDir("defaultTemplate", dir -> {
                 RunResult result = IntegUtils.run(
-                    dir, ListUtils.of("init", "-u", templatesDir.toString()));
+                        dir, ListUtils.of("init", "-u", templatesDir.toString()));
                 assertThat(result.getOutput(),
-                    containsString("Please specify a template using `--template` or `-t`"));
-                assertThat(result.getExitCode(), is(1));
+                        containsString("Smithy project created in directory: quickstart-cli"));
+                assertThat(result.getExitCode(), is(0));
             });
+        });
+    }
+
+    @Test
+    public void missingTemplate() {
+        IntegUtils.withProject(PROJECT_NAME, templatesDir -> {
+            setupTemplatesDirectory(templatesDir);
 
             IntegUtils.withTempDir("emptyTemplateName", dir -> {
                 RunResult result = IntegUtils.run(
                     dir, ListUtils.of("init", "-t", "", "-u", templatesDir.toString()));
                 assertThat(result.getOutput(),
-                    containsString("Please specify a template using `--template` or `-t`"));
+                    containsString("Please specify a template name using `--template` or `-t`"));
                 assertThat(result.getExitCode(), is(1));
             });
         });

smithy-cli/src/main/java/software/amazon/smithy/cli/commands/InitCommand.java

@@ -44,7 +44,7 @@
 final class InitCommand implements Command {
     private static final String SMITHY_TEMPLATE_JSON = "smithy-templates.json";
     private static final String DEFAULT_REPOSITORY_URL = "https://github.com/smithy-lang/smithy-examples.git";
-
+    private static final String DEFAULT_TEMPLATE_NAME = "quickstart-cli";
     private static final String DOCUMENTATION = "documentation";
 
     private static final String NAME = "name";
@@ -157,7 +157,7 @@ private void cloneTemplate(Path temp, ObjectNode smithyTemplatesNode, String tem
             throws IOException, InterruptedException, URISyntaxException {
 
         if (template == null || template.isEmpty()) {
-            throw new IllegalArgumentException("Please specify a template using `--template` or `-t`");
+            throw new IllegalArgumentException("Please specify a template name using `--template` or `-t`");
         }
 
         ObjectNode templatesNode = getTemplatesNode(smithyTemplatesNode);
@@ -275,7 +275,7 @@ private static String pad(String s, int n) {
     }
 
     private static final class Options implements ArgumentReceiver {
-        private String template;
+        private String template = DEFAULT_TEMPLATE_NAME;
         private String directory;
         private Boolean listTemplates = false;
         private String repositoryUrl = DEFAULT_REPOSITORY_URL;